In order for you to play River City Ransom: Underground on Linux with minimal graphics settings, your computer must meet the following requirements
Operating System:
glibc 2.15+, 32/64-bit
Processor (CPU):
Intel Core 2 Duo 1.8Ghz or equivalent
Memory (RAM):
3 GB RAM
Graphics Card:
512MB GPU, OpenGL 3.0+ (2.1 with ARB extensions acceptable)
Storage:
120 MB available space